Multiple glass sheet glazing construction



Jan. 22, 1952 F. A. RODMAN MULTIPLE GLASS SHEET GLAZING CONSTRUCTION Filed Aug. 23, 1947 Zhwcntor attornega Patented Jan. 22, 1952 MULTIPLE GLASS SHEET GLAZING CONSTRUCTION Frank A. Rodman, Toledo, '0hio,' assignor to Libbey-Owens-Ford Glass Company, Toledo, Ohio, a corporation of Ohio Application August '23, 1947, Serial No. 770,264

Claims. (oi. -565) The present invention relates broadly to the multiple glazing of window openings and more particularly to an improved double glass sheet glazing construction for railway cars, busses, and other structures.

An object of the invention is to provide a double glazing construction especially adapted for, although not limited to, the mounting of bent or curved sheets of glass.

, Another object of the invention is to provide a 1 double glazing construction so designed that it will readily adapt itself to irregularities in the glass sheets or to differences in the curvature thereof whereby to reduce to a minimum the setting up of strains in the said sheets and the lie.-

bility of glass breakage.

Another object of the invention is the provision of a novel mounting for the glass sheets which will eliminate excessive differences in pressure between the air in the space between the glass In the drawings, wherein like numerals are employed to designate like parts throughout the same:

i Fig. l is a perspective sectional view of a double glass sheet glazing construction made in accordance with the invention;

Fig. 2 is a transverse section taken substantially on line 2-2 of Fig. 1;

Fig. 3 is a transverse sectional view through .the mounting strip; and

Fig. 4 is a transverse sectional view showing a modified type of modified strip.

With reference now to the drawings, I0 and H designate the outer. and inner walls or sheathing of a railway car, bus, or other structurehaving an opening to be glazed by the sheets or panes of glass l2 and I3. Arranged between the outer and inner walls It! and l I is a sash member Hi cooperating with said walls to form a frame for receiving the mounting strip I5 for the glass sheets I2 and I3,

The sash member I4 comprises a transverse web l6 and oppositely disposed flanges l1 and 13 disposed oppositeand secured to the outer and inner walls l0 and II respectively. The flang i7 is secured to the outer wall by aretaining strip I9 and suitable fastening means such as screws 2B. A plate 2| of suitable insulating material is preferably arranged between the flange I! and outer Wall it. The opposite flange I8 is disposed parallel with the upper end portion of the inner wall I l and fitting thereover is a channel-shaped clampingstrip 22.

The mounting strip I 5 is formed of a resiliently compressible material, preferably rubber or other elastic-deformable material, extruded or molded to the cross section illustrated in Fig. 3. The mounting strip comprises a substantially rectangular body portion 23 provided along opposite sides thereof with the outwardly directed wings 2t and adapted, whenthe mounting strip is installed, to engage the outer surfaces of the glass sheets l2 and I3 as shown in Fig. 1.

In order to facilitate flexing of the wings 24 and 25 uponinstallation of the mounting strip i5 without undue stretching of the rubber or other elastic material, the body portion 23 is provided along its opposite sides and directly in back of the wings 24 and 25 with horizontal vshaped grooves 26 and 21. The body portion 23 is alsoprovided intermediate the wings 24 and 25 with a tubular spacing member 28 attached to said body portion by a narrow flexible Web 29.

As pointed out above; the wings 24 and 25 of the mounting strip [5 normally extend outwardly and the spacer 28 is oftubular form as shown in .Fig. 3. However, when the mounting strip is installed in-the frame and the glass sheets i2 and I3 associated. therewith, the wings 24 and 25 will be bent or flexed inwardly to cooperate with the spacer 28 to form substantially U-shaped channels for receiving the marginal portions of the glass sheets therein.

After the mounting strip has been installed in I the frame and the glass sheets assembled there- .with,. the fasteningmeans 20 are tightened to causethe clamping member 22 to compress the Wings 24 and 25 against the outer surfaces of the glass sheets and the tubular spacer 28 against the inner surfaces thereof. During such clamping action; the tubular spacer will-be compressed as shown in Fig. 1 to provide relatively wide fiat :faces contacting the glass sheets. In this way, .the said sheets are properly spaced apart while the space between the sheets is effectively sealed. .Thus, the spacer. 28 beingiundertcompression will constantly tend to urge the glass sheets outwardly against the wings 24 and 25, thereby maintaining a tight seal as well as taking up any irregularities in the glass sheets or any variations in curvature between the two sheets. As seen in Fig. 2, when the mounting strip is installed and the wings 24 and 25 moved inwardly, the grooves 28 and '21 will be spread out or laterally extended so that undue stretching of the rubber or other material is avoided.

The invention also contemplates means for equalizing pressure differences between the space between the glass sheets and the atmosphere created by differences in temperature or altitude.

For this purpose, the spacer '28 is transversely slotted as at 30 to provide a. vent registering with an opening or aperture 3| extending through the body portion 23 of the mounting strip. Thus. assuming the air within the space between the sheets is under greater pressure than the atmosphere, it will pass outwardly 'through 'the slot 30 and opening 31, whereas if the pressures are such that air tends to flow into the space between the glass sheets, the atmospheric air can enter through opening 3|. The opening 3| is preferably filled with aplug 32 of sponge rubber, cotton, or other filtering material which removes dirt and other foreign matter from the air passing into the space between the glass sheets.

In Fig. 4 is illustrated a modified type of The insertion of the filler strips 31 expands the grooves 33 and places the wings 21 and 25 under a compressive stress which forces them into firm clamping engagement with the marginal portions of the glass sheets received between said wings and the tubular spacer '28.

lhe filler strips 34 may also be formed of molded or extruded rubber but are preferably stiffer or less elastic than the material of the mounting strip. Inasmuch as they serve primarily as a wedge to hold the wings under a compressive stress, the filter strips may be inserted and removed as desired by hand or through the use of special tools designed for this purpose. When inserted, the glass sheets will be firmly clamped between the tubular spacer :and' the wings which hug tightly the marginal portions of the said sheets, resulting in :a sealed. air space between the glass sheets. When using this type of mounting strip, the outer wall ID of the frame need not extend upwardly o posite the mounting strip. While the glass sheets 12' and 13 are shown as being of difierent thicknesses, it will'be appreciated that they may be of equal thickness and that different kinds of glass as well as various combinations may be used.

It is to be understood that the former the invention herewith shown and described-is to be taken as the preferred embodiment of the same, and that varoius changes in the shape, size and arrangement of parts maybe resorted to without departing from the spirit of the'invention or the scope of the 's'ubjoined claims.

I claim:

1. In a multiple glass sheet glazing construction, a frame, a resiliently compressible mounting strip in said frame comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the *upper part of said body and 'a closed spacer of round tubular form iii-cross section between 11ml wings, glass sheets arranged between said wings and tubular spacer, and means for compressing the wings against the outer faces of the glass sheets and the tubular spacer against the inner faces thereof.

2. In a multiple glass sheet glazing construction, a frame, a resiliently compressible mounting strip in said frame comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body and a closed spacer of round tubular form in cross section between said wings, glass sheets arranged between said wings and tubular spacer, and means for compressing the wings against the outer faces of the glass sheets and the tubular spacer against the inner faces thereof, said mounting strip being vented to place thesp'ace between the glass sheets in communication with the atmosphere.

'3. In a multiple glass sheet glazing construction, a frame, a resiliently compressible mounting strip in said frame comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body and a closed spacer of round tubular form in cross section between said wings, glass sheets arranged between said wings and tubular spacer, and means for compressing the wings against the outer faces of the glass sheets and the tubular spacer against the inner faces thereof, said mounting strip being vented to place the space between the glass sheets in communication with the atmosphere, the tubular spacer being slotted transversely and the body portion having an opening communicating with the atmosp'here and with the space between the glass sheets through said slot.

4. Ina multiple glass sheet glazing construction, a frame comprising spaced inner and outer side members, a resiliently compressible mount? i-ng strip between said side members comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body and a closed spacer of round tubular form in cross section between said wings, glass sheets arranged between said wings and tubular spacer, and means associated with the frame for clamping the side members of said frame against the mounting strip to compress the wings against the ou'ter faces of the glass sheets and the tubular spacer against the inner faces thereof.

5. In a multiple glass sheet glazing construction, a frame comprising spaced inner and outer side members, a resiliently compressible 'mo'un-ting strip between s'aidside members comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body and a closed spacer of round tubular form in cross section between said wings, the mounting strip being also provided in its outer surfaces with substantially V-shaped grooves at the juncture of the wings and body portion and opposite the spaced inner and outer side members of the frame, glass sheets arranged between said wings and tubular spacer, and means associated'with the frame for clamping 'the side members of said frame against the mounting strip to compress the wings against-the outer faces of the glass sheets and the tubular spacer against the inner faces thereof, said grooves being laterally extended upon compressing of said wings.

'6. In a multiple glass sheet glazing construction, a frame, a resiliently compressible mounting strip in said frame comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body and a closed spacer of round tubular form in cross section between said wings, glass sheets arranged between said wings and tubular spacer, said body portion being also provided along its opposite sides outwardly of said wings with substantially V-shaped grooves, and wedging filler strips received in said grooves for compressing the wings against the outer faces of the glass sheets and the tubular spacer against the inner faces thereof.

'7. A mounting strip for supporting two sheets of glass in spaced, substantially parallel relation, said strip being formed of resiliently compressible material comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body for engagement with the outer faces of the glass sheets and a closed spacer of round tubular form in cross section between said wings for engaging the inner faces of said sheets.

8. A mounting strip for supporting two sheets of glass in spaced, substantially parallel relation, said strip being formed of resiliently compressible material comprising a substantially rectangular body portion having an opening projecting therethrough and wings extending upwardly and outwardly from the upper part of said body for engagement with the outer faces of the glass sheets and a closed spacer of round tubular form in cross section between said wings for engaging the inner faces of said sheets, said tubular spacer being provided with a transverse notch communicating with the opening extending through said lmdy portion.

9. A mounting strip for supporting two sheets of glass in spaced, substantially parallel relation, said strip being formed of resiliently compressible material comprising a substantially rectanguler body portion having wings extending upwardly and outwardly from the upper part of said body for engagement with the outer faces of the glass sheets and a closed spacer of round tubular form in cross section between said wings for engaging the inner faces of said sheets, said mounting strip being also provided in its outer surfaces with longitudinally extending, substantially V- shaped grooves at the juncture of the wings and body portion in back of said wings to prevent undue stretching of the compressible material when said wings are moved inwardly to contact the outer faces of the glass sheets.

10. A mounting strip for supporting two sheets of glass in spaced, substantially parallel relation, said strip being formed of resiliently compressible material comprising a substantially rectangular body portion having wings extending upwardly and outwardly from the upper part of said body for engagement with the outer faces of the glass sheets and a closed spacer of round tubular form in cross section between said wings for engaging the inner faces of said sheets, said body portion being also provided along its opposite sides outwardly of said wings with substantially V-shaped grooves, and wedging filler stripsreceived in said grooves for compressing the wings against the outer faces of the glass sheets and the tubular spacer against the inner faces thereof.

FRANK RODMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,975,895 Geyer Oct. 9, 1934 1,982,351 Phillips Nov. 27, 1934 2,189,137 Eichner Feb. 6, 1940 2,285,003 Axe June 2, 1942 2,373,388 Fischer Apr. 10, 1945 2,478,837 Rodman Aug. 9, 1949 

